FaceTime plays call audio using a daemon called avconferenced, so
BGMDriver can't tell where the audio is actually coming from. As a
hopefully temporary fix, BGMApp now just sets avconferenced's volume to
match FaceTime's. See #139.
Also,
- set a tooltip and accessibility label for BGMApp's status bar item
(the thing you click to show the main menu), and
- some minor refactoring.
BGMDeviceControlsList: Set some members to null before they've been
lazily initialised.
BGM_TaskQueue: Fix the destructor possibly throwing.
BGM_Device and BGM_NullDevice: Fix integer division when calculating the
host clock frequency.
BGM_Utils: Fix the C++ utility function used to explicitly cast
__nullable values to __nonnull. (Was previously unused.)
System sounds are UI-related sounds like mail notifications or terminal
bells.
Xcode 9.2 doesn't support saving .xib files in Xcode 7 format any more,
so building Background Music now requires Xcode 8 or above.
Also, fix some of the tooltips that would only work if BGMApp was the
foreground app, which it shouldn't be.
The label above the slider is set to the name of the new output device
and the slider's value is set to its volume.
Also,
- clean up some code in BGMAudioDeviceManager and
BGMOutputVolumeMenuItem, and
- return from BGMAppDelegate::applicationDidFinishLaunching early if
the launch is being aborted.
QuickLook's bundle ID has changed in High Sierra, which broke the
workaround that BGMApp uses to change QuickLook's app volume when
Finder's is changed.
Reported in #134.
This is mostly so BGMApp won't leave BGMDevice as the default if BGMApp
crashes, which would stop audio from playing until the user changed the
default device themselves. Also handles SIGINT, SIGTERM and SIGQUIT.
For crashes where the BGMApp process may be in an unknown state, e.g.
segfaults, BGMXPCHelper handles changing the default device.
Should fix the Travis Xcode 9 build, which is currently failing because
the AppleScript we use to quit BGMApp in .travis.yml gets "user
cancelled" for some reason.
Also makes some minor improvements to the reports generated by
CrashReporter. The way CrashReporter works with Background Music should
otherwise be unchanged.
Specifically, apps with NSApplicationActivationPolicyAccessory. That
includes status bar apps like Background Music, but also includes some
that aren't intended to be shown to users as applications like
SystemUIServer.
I'm not sure how much we can do about that. It would probably help if we
hid apps that BGMDriver isn't able to match to a CoreAudio client.
Resolves#122.
If the bundle ID passed to the function (a CACFString) was wrapping a
null CFStringRef, one of the comparison operator functions of CACFString
would pass null to CFStringCompare.
Similar to the one in macOS's Volume menu extra.
I'm mainly adding it so we can increase the output volume when the user
sets an app volume above 50%. Currently, setting an app volume above 50%
(the default) risks clipping, so it doesn't make sense to do so unless
your main output volume is at its max.
The volume slider added in this commit will make it clear to the user
that their main output volume is also increasing.
The other app volumes won't change, so in the ideal case the user
wouldn't need to be aware that their output device's volume is being
changed. But they might play audio to the device directly and would
expect it to play at the same volume as before they changed the app
volume.
Fix the workaround for apps whose bundle IDs don't match their CoreAudio
clients. BGMBackgroundMusicDevice::ResponsibleBundleIDsOf was always
returning an empty list.
Also fix over-releasing the app's bundle ID CFString in
BGMAVM_VolumeSlider::appVolumeChanged and
BGMAVM_PanSlider::appPanPositionChanged.
Both bugs were introduced two commits ago in
e05acde351.
There's still some code left that should be moved into the new class,
BGMBackgroundMusicDevice, but I think this is most of it.
This also helps reduce/contain the code that has to be aware of the
second instance of BGMDevice, which handles UI-related audio.
On macOS, apps are supposed to play UI-related sounds using the "system
default" device. This commit creates a new instance of BGM_Driver, which
BGMApp sets as the system default device. BGMApp ignores audio played to
that device when deciding whether to pause/unpause the user's music
player.
Since UI sounds are short, this helps avoid pausing the music player and
unpausing it shortly after.
Some apps have different bundle IDs to their CoreAudio clients, so
the bundle ID BGMApp sends with the app's volume doesn't match any
client in BGMDriver.
This change hardcodes the bundle IDs used by some popular apps and the
bundle IDs their clients use. We should be able to fix this for all
(almost all?) apps at some point.
It turns out that the HAL will sometimes call BGM_Driver::StartIO before
sending kAudioDevicePropertyDeviceIsRunning to BGMPlayThrough. In that
case, BGMApp would start playthrough and tell BGMDriver to return from
StartIO immediately, which meant we would drop the initial frames while
the output device started up.
So now BGMApp waits for the output device in that case as well.
Fixes#7.
The non-interactive version can be called by a Homebrew Cask formula.
Also, change some AppleScript to reference applications by their IDs
rather than their names, which should make them slightly more robust.
Also,
- add Background Music Device.driver to the array of bundles in
pkgbuild.plist, and
- don't warn about the permissions of the install dir for BGMXPCHelper
in build_and_install.sh if it's only building.
